Quote by Anthony Holden
Charles was very intent to use his years as Prince of Wales to make his mark while he still had freedom of maneuver that he wouldn't have as King. The first subject he really went for was architecture. It made an impact.
Summary
This quote is explaining that Charles, as Prince of Wales, was determined to leave a lasting impact on society before he ascended to the throne and lost the freedom to act independently. He chose architecture as his first area of focus and worked diligently to promote his ideas and projects. His efforts in the field of architecture made a significant impression and had a notable effect on the built environment.